Sysfw provides an option for requesting exclusive access for a
device using the flags MSG_FLAG_DEVICE_EXCLUSIVE. If this flag is
not used, the device is meant to be shared across hosts. Once a device
is requested from a host with this flag set, any request to this
device from a different host will be nacked by sysfw.
Current tisci firmware and pm drivers always requests for device with
exclusive permissions set. But this is not be true for certain devices
that are expcted to be shared across different host contexts.
So add support for getting the shared or exclusive permissions from DT
and request firmware accordingly.
Changes since v2:
- Added macros for new power-domain cell
- Rebased on top of v5.1-rc4
- Updated commit messages.
Lokesh Vutla (5):
firmware: ti_sci: Allow for device shared and exclusive requests
dt-bindings: ti_sci_pm_domains: Add support for exclusive and shared
access
soc: ti: ti_sci_pm_domains: Add support for exclusive and shared
access
soc: ti: ti_sci_pm_domains: Switch to SPDX Licensing
arm64: dts: ti: k3-am654: Update the power domain cells
.../bindings/soc/ti/sci-pm-domain.txt | 11 ++++-
MAINTAINERS | 1 +
arch/arm64/boot/dts/ti/k3-am65-main.dtsi | 32 ++++++-------
arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi | 10 ++---
arch/arm64/boot/dts/ti/k3-am65-wakeup.dtsi | 6 +--
arch/arm64/boot/dts/ti/k3-am65.dtsi | 1 +
drivers/firmware/ti_sci.c | 45 ++++++++++++++++++-
drivers/soc/ti/ti_sci_pm_domains.c | 33 +++++++++-----
include/dt-bindings/soc/ti,sci_pm_domain.h | 9 ++++
include/linux/soc/ti/ti_sci_protocol.h | 3 ++
10 files changed, 112 insertions(+), 39 deletions(-)
create mode 100644 include/dt-bindings/soc/ti,sci_pm_domain.h
--
2.21.0
